Can yall answer all if them?? please​

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?